Alfred h



UNITED STATES PATENT OFFICE. I

ALFRED TYLER. AND JOHN S. E. 'DE VESIAN, OF LONDON, ENGLAND, ASSIGNORS TO THE PNEUMATIC WOOD OARVING MACHINE SYNDICATE,

LIMITED, OF SAME PLACE.

- PORTABLE MOTOR.

SPECIFICATION forming part of Letters Patent No. 512,527, dated January 9, 1894.

Application filed April 24, 1893. Serial No. 471,539. (No model.) I

while it is working, or it may be attached to a movable part of a machine, such as a Wood carving machine, or it may be attached to a stationary objectto be used for any purpose to which such a motor is applicable.

In the accompanying drawings, Figure 1 is a vertical section, and Fig. 2 a partial plan of a motor constructed according to our invention.

a The motor consists of a casing H which may be provided with an eye 72. for the purpose of clamping the tool, by a screw passed through the hole h to a stationary object or to a movable part of a machine as before stated. This casing H carries bearings for the axis or spindle I which preferably runs on ball bearings j j, the spindle being provided with shoulders at 2' i for the balls to bear on. The said casing at Hialso constitutes a cylinder in which revolves a disk K secured to the spindle I, and provided with vanes 70. The air pressure may be obtained by means of a bellows operated by hand or by a treadle or by any other suitable means and the compressed air is conveyed to the cylinder of the motor by means of flexible pipes m leading from the air reservoir of the bellows or other fluid compressing device. The air acts upon the vanes k and turns the disk K and the shaft I to which the disk is attached. The air after acting on the vanes k may pass from the casing through the disk K and through holes 10 therein.

carving, the air coming through the holes 70 two subscribing witnesses.

If the motor is to be used to rotate a tool the shaft I may be formed as a tool holder at h, and in case the tool used is for cutting orwill clear away chips or dust from the work.

We claim as our invention 1. A motor comprising a shaft, a disk attached thereto and carrying vanes, a cylinder in which the dis'kand its vanes revolve, and means for conveying fluid under pressure to the said cylinder, and fluid outlet openings in' the disk near the shaft substantially as set forth.

2. A motor comprising a shaft, a disk attached thereto carrying vanes, a cylinder closed at one end by said disk, and in which the disk and its vanes rotate, means for'conveying fluid under pressure to the said cyl inder and fluid outlet openings in the said disk near the shaft, substantially as set forth.

3. In a motor the combination of a casing, a cylinder formed on the casing, and means for conveying fluid under pressure to the cylinder, with a shaft having its bearings in the said casing, and a disk attached to the shaft and provided with openings and carrying vanes, the said disk and its vanes adapted to revolve in the said cylinder, substantially as set forth.

4. A motor com prising a shaft provided'at one end with a tool-holder, a disk attached to the shaft and provided with holes near the tool holder, and also provided with vanes, a cylinder in which the disk and its vanes revolve, and means for conveying fluid under pressure to the said cylinder, all substantially as and for the purposes set forth.

In testimony whereof we have signed our names to this specification in the presence of Both of 1 Gresham Buildings, London, E. O. 

